Optical Properties of Ag@TiO2 and CdS@TiO2 Core-Shell Nanostructures

被引:7
|
作者
Vaidya, Sonalika [2 ]
Patra, Amitava [3 ,4 ]
Ganguli, Ashok K. [1 ]
机构
[1] Indian Inst Technol, Dept Chem, New Delhi 110016, India
[2] Univ Delhi, Dept Chem, Hindu Coll, Delhi 110007, India
[3] Indian Assoc Cultivat Sci, Dept Mat Sci, Kolkata 700032, India
[4] Indian Assoc Cultivat Sci, Ctr Adv Mat, Kolkata 700032, India
关键词
Core-Shell Nanostructures; Optical Properties; SIZE; OXALATE;
D O I
10.1166/sam.2012.1330
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Titanium hydroxyacylate has been used as a shell forming agent to form core shell nanostructures of Ag@TiO2 (10-40 nm core; 15 nm shell) and CdS@TiO2 (3 nm core; 1 nm shell) using the reverse micellar route. The low rate of hydrolysis of titanium hydroxyacylate appears to be responsible for the formation of TiO2 shell. A red shift of 25 nm was observed in the surface plasmon band of silver for Ag@TiO2 core shell structures (compared with that of silver nanoparticles) while blue shift of the absorption band CdS@TiO2 core shell nanostructures (compared to bare CdS nanoparticles) was observed. CdS@TiO2 shows a strong quantum confinement effect. Our studies clearly show an increase in the PL intensity of Ag@TiO2 which we rationalize based on the SERS effect of the Ag nanoparticle. No quenching was observed of the emission band of CdS for the CdS@TiO2 core shell nanostructures.
引用
收藏
页码:631 / 636
页数:6
相关论文
共 50 条
  • [41] Synthesis of hollow core-shell CdS@TiO2/Ni2P photocatalyst for enhancing hydrogen evolution and degradation of MB
    Wu, Keliang
    Wu, Pengcheng
    Zhu, Junfang
    Liu, Chang
    Dong, Xuejun
    Wu, Jianning
    Meng, Guihua
    Xu, Kangbo
    Hou, Juan
    Liu, Zhiyong
    Guo, Xuhong
    CHEMICAL ENGINEERING JOURNAL, 2019, 360 : 221 - 230
  • [42] Dielectric performance of polymer-based composites containing core-shell Ag@TiO2 nanoparticle fillers
    Liang, Fei
    Zhang, Lu
    Lu, Wen-Zhong
    Wan, Qian-Xing
    Fan, Gui-Fen
    APPLIED PHYSICS LETTERS, 2016, 108 (07)
  • [43] Plasmonic properties of Ag@TiO2 nanostructures improve the graphitization of polyacrylonitrile and the mechanism
    Zhang, Zhengdong
    Bai, Yaoning
    Li, Xinru
    Ouyang, Taoyuan
    Yan, Yuwei
    Sun, Nan
    Liu, Jianqi
    Cai, Xiaoming
    Cai, Jinming
    Tan, Honglin
    JOURNAL OF MATERIALS RESEARCH, 2023, 38 (07) : 1994 - 2006
  • [44] Plasmonic properties of Ag@TiO2 nanostructures improve the graphitization of polyacrylonitrile and the mechanism
    Zhengdong Zhang
    Yaoning Bai
    Xinru Li
    Taoyuan Ouyang
    Yuwei Yan
    Nan Sun
    Jianqi Liu
    Xiaoming Cai
    Jinming Cai
    Honglin Tan
    Journal of Materials Research, 2023, 38 : 1994 - 2006
  • [45] Hot Electron Emission Can Lead to Damping of Optomechanical Modes in Core-Shell Ag@TiO2 Nanocubes
    Peckus, Domantas
    Rong, Hongpan
    Stankevicius, Lukas
    Juodenas, Mindaugas
    Tamulevicius, Sigitas
    Tamulevicius, Tomas
    Henzie, Joel
    JOURNAL OF PHYSICAL CHEMISTRY C, 2017, 121 (43): : 24159 - 24167
  • [46] Study of the role of metal core on the thermal behavior of Ag@TiO2 core–shell nanoparticles
    D. Banerjee
    S. K. Das
    Journal of Radioanalytical and Nuclear Chemistry, 2014, 300 : 99 - 105
  • [47] One-pot synthesis of Ag@TiO2 core-shell nanoparticles and their layer-by-layer assembly
    Pastoriza-Santos, I
    Koktysh, DS
    Mamedov, AA
    Giersig, M
    Kotov, NA
    Liz-Marzán, LM
    LANGMUIR, 2000, 16 (06) : 2731 - 2735
  • [48] Synthesis of core-shell structured CdS@CeO2 and CdS@TiO2 composites and comparison of their photocatalytic activities for the selective oxidation of benzyl alcohol to benzaldehyde
    Zhang, Ping
    Liu, Ya
    Tian, Baozhu
    Luo, Yusheng
    Zhang, Jinlong
    CATALYSIS TODAY, 2017, 281 : 181 - 188
  • [49] Optical Properties of the Type-II Core-Shell TiO2@CdS Nanorods for Photovoltaic Applications
    Das, Kajari
    De, S. K.
    JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (09): : 3494 - 3501
  • [50] Plasmonic core–shell nanoparticles of Ag@TiO2 for photocatalytic degradation of Rhodamine B
    C. Parvathiraja
    S. Shailajha
    Applied Nanoscience, 2023, 13 : 3677 - 3692